Water Leak in Rear Cargo Area - carpet wet

When servicing the vehicle with the VIN you entered, the following diagnosis might be helpful if the vehicle exhibits the described symptoms.

Customer may comment that the carpet in the rear cargo area is wet.

Waterleak may appear that it is coming from the pressure relief valve.

1. Verify that pressure relief valve is working properly by watertesting.
2. Also verify that the sunroof is adjusted properly; water may be entering the rear of the sunroof, running along the top of the headliner and draining into the rear compartment. If this is the cause of the waterleak, the leak may only occur when driving down the road when raining.

Please follow this diagnosis process thoroughly and complete each step. If the condition exhibited is resolved without completing every step, the remaining steps do not need to be performed. If these steps do not resolve the condition, please contact GM TAC for further diagnostic assistance. This diagnostic approach was developed for the vehicle with the VIN you entered and should not be automatically be used for other vehicles with similar symptoms.